Locking, Clamping and Sealing
Why are locking, clamping and sealing applications important to secure fasteners?
A simple bolt, screw, nut, stud, plug, etc. It is one of the cornerstones of the fastener industry. When we consider the ever-changing demands and demands of technology industries, we see that fasteners are not simple at all, on the contrary, they are presented in numerous and different forms. These demands and demands created by technology industries force the fastener industry to constantly develop new techniques and apply new applications.
Although bolts, screws, studs or nuts are seen as sufficient elements to make a connection, in fact, they cannot provide the desired and demanded success in many different areas for the protection of the connection. It is desirable that the assembled fastener does not loosen. However, depending on where it is used, the fastener is exposed to factors such as vibration, vibration, oscillation, tension, oils, thermal and mechanical shocks, etc. As a result, these factors create a suitable environment for the fastener to loosen.
In order to prevent loosening problems, chemical manufacturers have developed microencapsulated coatings that provide locking, clamping and sealing applied to fasteners as a solution.
Microencapsulated Chemical Locking, Clamping and Sealing Application
Adhesive-containing microcapsules are dispersed in the dental retainer product and are available in different sizes. It is applied to the threads (passes) of fasteners such as bolts, screws, nuts, studs, plugs, etc., as shown in the picture and waited for curing. The microcapsules in the tooth retaining product burst with the torque applied in the assembly of the fastener and bond the teeth together, providing locking, clamping and sealing. Shelf life of fasteners coated with this application is 4 years at 20°C to 25°C.
Another feature of this product is that it allows the re-use of the assembled fastener. The assembled fastener sometimes needs to be disassembled and reassembled. This thread retainer product ensures that the fastener is firmly locked when mounted, and when it is disassembled, it is firmly mounted and locked again. It allows fasteners to show high resistance to suitable torques, disassembly and reassembly of the assembled element several times without losing its thread holding feature. Orapi company, which produces in France and several different countries, provides services in this field with its 458 Pre-Applique products. In our country, Pulsar Kimya San. ve Tic. Inc. We offer this product in our portfolio.
Orapi 458 Pre-Applique Technical Specifications
- Color and appearance : Blue liquid
- Viscosity – fluidity: 80 cPs
- Operating temperature: -50°C / +100°C
- Gap filling (min. / max.): 0.05 mm / 0.30 mm
- First curing time – film layer: 10 – 25 minutes
- Full freezing time – final freezing : 24 – 48 hours
- Slack strength for metric 10 (M10) – 3/8” inch steel bolts : < 10 Nm
Microencapsulated Coatings for Locking, Clamping and Sealing
Microencapsulated coatings in fasteners are becoming more common day by day. As we mentioned above, if the connection is the responsibility of the fastener manufacturers, the protection and safety of the connection should be the guarantee given by the manufacturer who made the connection. In the past, some fastener manufacturers abroad took the fasteners they offered for sale under warranty and paid high compensations for the fasteners that loosened, opened and fell out after they were assembled. Today, they have found solutions to these problems by providing the connection security with the locking, clamping and sealing microencapsulated coatings we mentioned.
Where are Microencapsulated Coatings Used?
It is used in many fields such as electronics, durable consumer goods, installations, especially automotive. A locking, clamping and sealing coating is suitable for small screws found in computers, mobile phones, electronic devices and even eyeglasses that loosen very easily. In addition, fasteners in drills, low-speed motors used in compressors, air conditioner, cooler and freezer compressors are covered with microencapsulated coatings because they are exposed to vibration and shock.
Considering the compatibility of microencapsulated coatings with locking, clamping, sealing, sealing, tension, oscillation and torque requirements, it is observed that these coatings respond to multiple needs and gain integrity with fasteners.
Microencapsulated coatings that provide locking, clamping and sealing, which are indispensable products of many productions and which have become very common in American and European countries, have started to be gradually recognized and used in our country. Increasing production of safe fasteners in our country; We hope that the microencapsulated coatings, which are developed for fasteners that are intended to remain as they were installed, which can lead to vital consequences in case of loosening and leaks, and which are also resistant to corrosion, will be indispensable for all our industries.
Author: Murat Yeşildağ